build.xml

<?xml version="1.0" encoding="utf-8"?>
<project name="EClosure" default="Help" basedir="." >

  <property name="build.dir" value="build" />
  <property name="src.dir"   value="src" />
  <property name="lib.dir"   value="lib" />
  <property name="doc.dir"   value="doc" />
  <property name="demo.dir"   value="demo" />

  <target name="Help">
    <echo message="Compile | Compila el proyecto."/>
    <echo message="Clean | Restaura la carpeta a su configuración inicial."/>
    <echo message="Document | Compila, empaqueta y genera la documentación del proyecto."/>
    <echo message="EClosure.jar | Compila y empaqueta el proyecto."/>
    <echo message="Help | Muestra esta lista de opciones."/>
  </target>

  <target name="EClosure.jar" depends="Compile">
    <jar jarfile="EClosure.jar">
      <zipfileset dir="${build.dir}" prefix="" />
      <zipgroupfileset dir="${lib.dir}" includes="*.jar" />
      <manifest>
        <attribute name="Main-Class" value="EClosure.App"/>
      </manifest>
    </jar>
  </target>

  <target name="Compile">
    <mkdir dir="${build.dir}"/>
    <javac srcdir="${src.dir}"
           destdir="${build.dir}"
           debug="true"
           debuglevel="lines,vars,source"
           includeantruntime="false"
           deprecation="true"
           nowarn="off"
           encoding="utf-8">
      <classpath>
        <fileset dir="${lib.dir}">
          <include name="*.jar"/>
        </fileset>
      </classpath>
      <compilerarg value="-Xlint:unchecked"/>
    </javac>
    <copy todir="${build.dir}/EClosure/fxml">
      <fileset dir="${src.dir}/EClosure/fxml"/>
    </copy>
  </target>

  <target name="Document" depends="EClosure.jar">
    <mkdir dir="${doc.dir}"/>
    <javadoc packagenames="EClosure.*"
             sourcepath="src"
             defaultexcludes="yes"
             destdir="${doc.dir}"
             charset="UTF-8"
             author="false"
             version="false"
             use="true"
             windowtitle="EClosure"
             encoding="utf-8">
      <doctitle><![CDATA[<h1>EClosure</h1>]]></doctitle>
      <link href="http://docs.oracle.com/javase/8/docs/api/" />
      <classpath>
        <pathelement location="${lib.dir}/pdfbox-2.0.0.jar" />
      </classpath>
    </javadoc>
  </target>

  <target name="Clean">
    <delete file="EClosure.jar"/>
    <delete dir="${build.dir}"/>
    <delete dir="${doc.dir}"/>
  </target>

</project>